Caribou, ME – Northern and interior parts of Maine are expected to see their coldest night of the early fall season Saturday, with widespread frost and freeze conditions likely, according to the National Weather Service in Caribou.
High pressure settling over the region will bring clear skies and calm winds, allowing temperatures to dip into the upper 20s in northern valleys and the mid-30s in southern interior valleys. The weather service said frost is possible as far south as interior Downeast. Fog may also develop along rivers by dawn Sunday.
Sunday will bring milder conditions, with afternoon highs reaching the mid-60s under mostly sunny skies. On Monday, sunshine will give way to increasing clouds, and temperatures will warm near 70 degrees in the afternoon.
Forecasters said a weak weather system is expected Monday night into Tuesday, with a chance of scattered light showers. Rain amounts are expected to remain light, with highs ranging from the upper 60s north to the mid-70s over interior Downeast.
A few showers could linger into Wednesday before another cool, dry Canadian high pressure system arrives for late next week.
Residents in frost-prone areas are urged to protect sensitive plants and outdoor items from freezing temperatures.
